CN201754495U - Multifunctional vacuum contactor - Google Patents
Multifunctional vacuum contactor Download PDFInfo
- Publication number
- CN201754495U CN201754495U CN2010201645311U CN201020164531U CN201754495U CN 201754495 U CN201754495 U CN 201754495U CN 2010201645311 U CN2010201645311 U CN 2010201645311U CN 201020164531 U CN201020164531 U CN 201020164531U CN 201754495 U CN201754495 U CN 201754495U
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- current transformer
- contactor
- insulating
- electromagnet
- vacuum
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- Expired - Fee Related
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model relates to a multifunctional vacuum contactor which belongs to the technical field of a high-voltage electrical apparatus and mainly solves the problem of single function of the vacuum contactor. The utility model is characterized in that the multifunctional vacuum contactor comprises a vacuum arc extinguishing chamber, an electromagnet, an insulating mandril, a synchronous mandril, an insulating partition board, an insulating frame and a bracket, wherein the vacuum arc extinguishing chamber is arranged on the insulating frame; the electromagnet is fixed at the bottom of the bracket; a current transformer is arranged on the insulating frame; a relay protection device is arranged on the bracket; a static contact of the vacuum arc extinguishing chamber is connected with a high-voltage inlet terminal; a moving contact is connected with an armature of the electromagnet through the synchronous mandril and the insulating mandril; and a conductive plate of the moving contact is connected with a primary side of the current transformer. The utility model has the characteristics that the traditional vacuum contactor, the current transformer and the relay protection device can be replaced by the multifunctional vacuum contactor, and a cabinet body structure can be simplified, therefore, the production cost of a switch cabinet can be effectively lowered, and the multifunctional vacuum contactor is mainly used in the high-voltage switch cabinet of a 3-10kV AC motor and a power capacitor.
Description
Technical field
The utility model belongs to high voltage electrical apparatus technical field.Be specifically related to a kind of vacuum contactor, be applicable to the electrical control and the protection of 3～10kV alternating current motor, power capacitor.
Background technology
Need Fraquent start or switching when 3～10kV alternating current motor, power capacitor operation; for assurance equipment and electric power netting safe running, the used high-tension switch cabinet of this kind equipment all should have " overload protection ", " open phase protection " reaches " current monitoring " basic function.This class high-tension switch cabinet normally disposes a vacuum contactor, disposes three current transformers and protective relaying device more separately.Take one section electric insulation at interval because current transformer is installed, to cause that switch cubicle is bulky, device fabrication cost height.
Summary of the invention
The purpose of this utility model is exactly to provide at above-mentioned deficiency in a kind of high-tension switch cabinet that can be used for 3～10kV alternating current motor, power capacitor; integrate vacuum contactor, current transformer and protective relaying device; can save traditional current transformer and protective relaying device; simplify cabinet body structure; thereby effectively reduce the switch cubicle production cost, can realize the multifunctional vacuum contactor of the miniaturization of switch cabinet, standardized production simultaneously.
Technical solution of the present utility model is: a kind of multifunctional vacuum contactor, comprise vacuum interrupter, electromagnet, insulating knockout pin, synchronous push rod, auxiliary switch, high pressure input terminal, high-voltage outlet terminal, it is characterized in that: also comprise the Insulating frame on insulating barrier and top, the support of bottom, described vacuum interrupter is installed on the Insulating frame, and electromagnet is fixed on frame bottom; On Insulating frame, be installed with current transformer; Protective relaying device is housed on support; The vacuum interrupter fixed contact is connected with the high pressure input terminal, and moving contact links to each other with electromagnet armature by synchronous push rod, insulating knockout pin, and the moving contact conductive plate links to each other with the current transformer primary side; The secondary circuit of current transformer is electrically connected with protective relaying device; Current transformer is connected with high-voltage outlet terminal.
Current transformer described in the technical solution of the utility model is made of guide rod, secondary coil, lead-in wire nut, an epoxide-resin glue, is compact direct hanging type structure; Secondary coil is tapped; A guide rod runs through and passes through secondary coil; No. one time guide rod, secondary coil, lead-in wire nut become an obturator with epoxide-resin glue together by vacuum pouring; One end of a guide rod links to each other with the vacuum interrupter bottom lead, and is fixed on the Insulating frame, and its other end is connected with high-voltage outlet terminal through busbar.
Protective relaying device described in the technical solution of the utility model is made up of accessory power supply and control circuit, relaying protection element circuit, measuring instrument interface circuit.
The utility model is owing to the vacuum interrupter with contactor is installed on the Insulating frame, its fixed contact is equipped with the high pressure input terminal, its movable contact conductive plate of nodding links to each other with the current transformer primary side and is fixed on insulation tank bracket bottom, moving contact is by synchronous push rod, insulating knockout pin links to each other with electromagnet armature, thereby when the electromagnet coil power adhesive, its armature promotes synchronous push rod rotation, the insulating knockout pin of push rod drive synchronously moves upward, connect and maintenance with fixed contact thereby the moving contact that promotes vacuum interrupter is up, this moment, the insulating knockout pin upper spring was compressed energy storage simultaneously; Its magnetic thrust of electricity disappears after the electromagnet coil dead electricity, and insulating knockout pin is in the effect of compression spring back stretch, and it is descending to drive the vacuum interrupter moving contact, and contactor is disjunction fast therefore.Control vacuum interrupter contact break-make by the electromagnet coil break-make, thereby realized the electric switch function of contactor.
When " overlond running " took place for contactor institute control equipment, if when its load current has surpassed the protective relaying device set point, protective relaying device can send " sound ", " light " alarm signal automatically, and the while also can be sent " far controlling signal "; In limited time, protective relaying device makes contactor electromagnet outage, contactor separating brake when " overlond running " time has surpassed the protective relaying device setting.Above-mentioned current transformer is to send pilot signal according to each " mutually " electric current changing value of load with protective relaying device, and by this contactor realization " overload protection " function to controlled plant.
When " open-phase running " took place contactor institute control equipment, three-phase load current imbalance, protective relaying device can send " sound ", " light " alarm signal automatically, also can send simultaneously " far controlling signal "; Surpassed the protective relaying device setting time limit when fault time, protective relaying device makes contactor electromagnet outage, contactor separating brake.Above-mentioned current transformer and protective relaying device send pilot signal according to the current imbalance degree of different each phase of load, realize " phase failure " defencive function to controlled plant by this contactor.
When operation troubless such as contactor institute control equipment generation " overload ", " phase failure ", protective relaying device promptly sends " alarm signal " and reaches " far controlling signal ", operating personnel in time fix a breakdown with alert device, when fault exceeds when setting the time limit, multi-functional contactor can equipment out of service by force; After trouble shooting, " alarm signal " that protective relaying device sent reaches " far controlling signal " and also automatically terminates.By real time fail signal and the pilot signal that protective relaying device sent, running protection, fault alarm, and function such as the signal is far passed have been realized to controlled plant.
The utility model is assembled in one with vacuum switch and miniaturized electric current transformer, protective relaying device, and vacuum contactor not only possesses the high-voltage switch gear effect, also possesses multiple electic protection function simultaneously.Each is equipped with current transformer mutually this vacuum contactor; and is furnished with independently protective relaying device; act on altogether with vacuum switch, this vacuum contactor is possessed " overload ", " phase failure " defencive function, possesses functions such as " current monitoring ", " fault-signal teletransmission " simultaneously.Because this contactor is provided electric protective device for oneself, can effectively improve as high-tension electricity gas equipment protection ability and monitoring levels such as motor, capacitors; Match this contactor and can make switch cubicle save traditional current transformer and relay equipment, simplification cabinet body structure, reduced the switch cubicle manufacturing cost, can realize miniaturization, the standardized production of switch cabinet simultaneously.
The utlity model has and integrate vacuum contactor, current transformer and protective relaying device; can save traditional current transformer and protective relaying device; simplify cabinet body structure; thereby effectively reduce the switch cubicle production cost, can realize the characteristics of the miniaturization of switch cabinet, standardized production simultaneously.The utility model is mainly used in the high-tension switch cabinet of 3～10kV alternating current motor, power capacitor, integrates the multifunctional vacuum contactor of vacuum contactor, current transformer and protective relaying device.
Description of drawings
Facad structure schematic diagram when Fig. 1 vertically installs for the utility model;
Left side structural representation when Fig. 2 vertically installs for the utility model;
Structure schematic diagram when Fig. 3 vertically installs for the utility model;
Facad structure schematic diagram when Fig. 4 vertically installs for the utility model miniaturized electric current transformer;
Left side structural representation when Fig. 5 vertically installs for the utility model miniaturized electric current transformer;
Bottom winding diagram when Fig. 6 vertically installs for the utility model miniaturized electric current transformer;
Fig. 7 is the main circuit diagram of the utility model contactor;
Fig. 8 is the accessory power supply and the control circuit figure of the utility model contactor;
Fig. 9 is the accessory power supply and the control circuit figure of the utility model contactor;
Figure 10 is the relaying protection element circuit figure of utility model contactor;
Figure 11 is auxiliary switching circuit figure.
Embodiment
As shown in Figure 1 to Figure 3.Insulating frame 1 is equipped with on insulating barrier 2 tops, the bottom is equipped with support 6.Arc control device 10 are fixed in the cavity on Insulating frame 1 top, and its top lead-in wire is fixed on the Insulating frame 1 with high pressure input terminal 7, and its underpart goes between on miniaturized electric current transformer 9 fixed insulation frameworks 1.Miniaturized electric current transformer 9 is equipped with the outlet terminal 8 of contactor.Electromagnet 16 is fixed on support 6 bottoms, and its armature links to each other with synchronous push rod 12.Device has three insulating knockout pins 11 on the push rod synchronously, and insulating knockout pin 11 other ends link to each other with the moving contact of arc control device 10, is with back-moving spring 15 in the middle of the insulating knockout pin 11 respectively.Connecting terminal block 4, earth terminal 14 are contained on the support 6.
Adhesive when electromagnet 16 coil electricities of contactor, the synchronous push rod 12 of the stressed drive of its armature upwards rotates, to promote insulating knockout pins 11 up for push rod 12 synchronously, arc control device 10 moving contacts up and with its fixed contact closure, contactor is finished combined floodgate; After contactor closed a floodgate, insulating knockout pin 11 upper reset springs were compressed, and did energy storage for the contactor tripping operation and prepared; Travel forward and drive trace 3 when synchronously push rod 12 rotates, promote auxiliary switch 5 actions.
Behind electromagnet 10 coil blackouts of contactor, its armature has lost rotary thrust, back-moving spring 15 on the insulating knockout pin 11 resets because of up time compression, and drives that insulating knockout pin is 11 descending, arc control device 10 moving contacts are descending and separate fast with fixed contact, and contactor is finished separating brake; Behind the contactor separating brake, drive trace 3 when push rod 12 resets synchronously and move backward, the armature that promotes electromagnet 16 resets, auxiliary switch 5 also automatically resets.
Miniaturized electric current transformer such as Fig. 4 are to shown in Figure 6.No. one time guide rod 17 runs through by its secondary coil 19, and the lead-in wire nut 20 of secondary coil 19 is installed in the instrument transformer bottom.Above-mentioned part becomes an obturator with epoxide-resin glue 18 together by vacuum pouring.The secondary coil 19 of this instrument transformer has four binding posts, by the terminal combination wiring, can form multiple electrorheological ratio.One end of a guide rod 17 of this instrument transformer links to each other with vacuum interrupter 10 bottom leads of contactor, and is fixed on the Insulating frame 1, its other end with busbar is installed, with the high-voltage outlet terminal of double as contactor.
The main circuit of contactor as shown in Figure 7.Three couples of masters of contactor touch QL, and its fixed contact links to each other with high-tension line, the high-voltage connection of moving contact is serially connected with miniaturized electric current transformer TA1～3 respectively; Instrument transformer TA1～3 link to each other with high voltage load (as motor, capacitor etc.).
The accessory power supply of contactor and control circuit figure are as shown in Figure 8.Add the alternating current 220V power supply and be ± 220V direct voltage after through single-phase rectification bridge UR rectification, with as the operating power of contactor electromagnet and the working power of relay equipment.Capacitor C makes alternating current filter; The electromagnet coil YA loop of contactor is serially connected with start-stop control switch SA1, relaying protection monitoring contact KT.
The relaying protection element circuit figure of contactor as shown in Figure 9.The secondary circuit of miniaturized electric current transformer TA1～3 is serially connected with ammeter PA1～3 (external), current relay respectively, and its zero sequence loop is serially connected with residual current relay KZ; Above-mentioned relay contact (moving mould assembly) the protection loop of inserting all in parallel.Time relay KT is used for protection time-delay monitoring, and its contact (time-delay is moving disconnected) directly is connected on the electromagnet coil loop; Alarm comprises indicator light HL and buzzer HZ, and " sound ", " light " that are respectively applied for fault in-situ are reported to the police.Auxiliary relay KM and warning synchronization action, its contact can be used for teletransmission fault-signal (as Figure 10).Fig. 9 used " current relay " is only applicable to allow the high voltage load of re-lighting; If load does not allow re-lighting, then above-mentioned relay should be used thermal relay instead.
The used electric elements of Fig. 8 and Fig. 9 are installed in continuing of contactor and protect in the box 13.
Auxiliary switch SA2 circuit diagram as shown in figure 10.The remote transfer signal circuit diagram as shown in figure 11.
When outside connected switch SA1 was in disconnection or gate-dividing state, electromagnet coil YA loop disconnected, and contactor is in gate-dividing state; When outside connected switch SA1 was in closure or "on" position, electromagnet coil YA loop switched on and adhesive, the dynamic and static contacting of contactor, and the high voltage load of contactor and high-pressure system are connected; Electromagnet coil YA can keep the "on" position of contactor by auxiliary switch SA2 " self-sustaining "; When outside connected switch SA1 was in disconnection or gate-dividing state again, electromagnet coil YA was because of the dead electricity automatic brake separating.
When the controlled plant load of contactor is in normal condition, miniaturized electric current transformer TA1～3 three-phase balances, its secondary loop current value is less than current relay KC1～3 set points, continue and protect contact KC1～3, KZ all is in off-state, contactor electromagnet YA all remains on "on" position.
When " overlond running " appears in contactor; miniaturized electric current transformer TA1～3 secondary loop current values are greater than current relay KC1～3 set points; current relay KC1～3 adhesives; continue and protect the loop connection, alarm HL, HZ send alarm signal at once, auxiliary relay KM sends teletransmission " fault-signal ".At this moment, time relay KT is initially located in the time-delay state, when " overlond running " time exceeds time relay KT reference time delay, and time relay KT action, contactor electromagnet coil YA loop is cut off, contactor protection monitoring tripping operation.So just realized " overload " defencive function to controlled plant.
When " open-phase running " appears in the controlled plant of contactor mutually, miniaturized electric current transformer TA1～3 secondary loop current do not weigh, its zero sequence loop has zero-sequence current to pass through, residual current relay KZ adhesive, continue and protect the loop, alarm HL, HZ send alarm signal at once, auxiliary relay KM sends teletransmission " fault-signal "; When " open-phase running " time exceeds time relay KT reference time delay, time relay KT action, contactor electromagnet coil YA loop is cut off, contactor protection monitoring tripping operation.So just realize " phase failure " defencive function to controlled plant.
After controlled plant " overload " or the releasing of " phase failure " operation troubles; the load current ash arrives normal condition again; current relay KC or residual current relay KZ contact then promptly automatically return to off-state, continue and protect the loop disconnection, and failure alarm signal and teletransmission fault-signal all automatically terminate.If this moment, controlled plant was shut down, then can reset equipment (annotate: if " declaration form unit continues " is the thermal relay type, then should be earlier to contactor after declaration form unit resets, can reset equipment).
Claims (3)
1. multifunctional vacuum contactor, comprise vacuum interrupter (10), electromagnet (16), insulating knockout pin (11), synchronous push rod (12), auxiliary switch (5), high pressure input terminal (7), high-voltage outlet terminal (8), it is characterized in that: also comprise the Insulating frame (1) on insulating barrier (2) and top, the support (6) of bottom, described vacuum interrupter (10) is installed on the Insulating frame (1), and electromagnet (16) is fixed on support (6) bottom; On Insulating frame (1), be installed with current transformer (9); On support (6), protective relaying device is housed; Vacuum interrupter (10) fixed contact is connected with high pressure input terminal (7), and moving contact links to each other with the armature of electromagnet (16) by synchronous push rod (12), insulating knockout pin (11), and the moving contact conductive plate links to each other with current transformer (9) primary side; The secondary circuit of current transformer (9) is electrically connected with protective relaying device; Current transformer (9) is connected with high-voltage outlet terminal (8).
2. multifunctional vacuum contactor according to claim 1 is characterized in that: described current transformer (9) is made of a guide rod (17), secondary coil (19), lead-in wire nut (20), epoxide-resin glue (18), is compact direct hanging type structure; Secondary coil (19) is tapped; A guide rod (17) runs through by secondary coil (19); A guide rod (17), secondary coil (19), lead-in wire nut (20) become an obturator with epoxide-resin glue (18) together by vacuum pouring; One end of a guide rod (17) links to each other with vacuum interrupter (10) bottom lead, and is fixed on the Insulating frame (1), and its other end is connected with high-voltage outlet terminal (8) through busbar.
3. multifunctional vacuum contactor according to claim 1 and 2 is characterized in that: described protective relaying device is made up of accessory power supply and control circuit, relaying protection element circuit, measuring instrument interface circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201645311U CN201754495U (en) | 2010-04-07 | 2010-04-07 | Multifunctional vacuum contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201645311U CN201754495U (en) | 2010-04-07 | 2010-04-07 | Multifunctional vacuum contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201754495U true CN201754495U (en) | 2011-03-02 |
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ID=43622227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201645311U Expired - Fee Related CN201754495U (en) | 2010-04-07 | 2010-04-07 | Multifunctional vacuum contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201754495U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107706660A (en) * | 2017-09-27 | 2018-02-16 | 潘灵灵 | It is a kind of can Remote control multifunctional intellectual socket |
| CN109545616A (en) * | 2018-12-29 | 2019-03-29 | 昆山瑞普电气有限公司 | Microminiature single phase ac high-pressure vacuum contactor |
-
2010
- 2010-04-07 CN CN2010201645311U patent/CN201754495U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107706660A (en) * | 2017-09-27 | 2018-02-16 | 潘灵灵 | It is a kind of can Remote control multifunctional intellectual socket |
| CN109545616A (en) * | 2018-12-29 | 2019-03-29 | 昆山瑞普电气有限公司 | Microminiature single phase ac high-pressure vacuum contactor |
| CN109545616B (en) * | 2018-12-29 | 2024-02-27 | 昆山瑞普电气有限公司 | Ultra-small single-phase alternating-current high-voltage vacuum contactor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110302 Termination date: 20150407 |
|
| EXPY | Termination of patent right or utility model |